Loom for weaving pile fabrics



1,517,464 E. H. RYON LOOM FOR WEAVING FILE FABRICS Filed Dec. 21 1922 5 Sheets-Sheet l E. H. RYON LOOM FOR WEAVING FILE FABRICS Filed Dec. 21 1922 3 Sheets-Sheet 2 E. H. RYON LOOM FOR WEAVING FILE FABRICS 1922 3 Sheets-Sheet 3 Filed Dec. 21

3mm pgm Patented Dec. 2, 1224s EPFA H. RYON, OF WALTHAM,

LOOM WORKS, 0F WORCESTER, IVIASSA SETTS.

MASSACHUSETTS, ASSZGNOE T0 CBOIEPTON & KNOWLES HUSETTS, A CORPOB/ATIONOF MASSACHU- LOOM FOR WEAVING PILE FABRICS.

Application filed December 21, 1922; Serial No. 608,297.

To all whom it may concern:

Be it known that I, ErrA H. BYON, a citizen of the United States, residing at Waltham, in the countyof Middlesex and State of Massachusetts, have invented a new and useful Loom for Weaving Pile Fabrics, of which the following is a specification.

This invention relates to a loom of the cross wire type, used particularly in the weaving of heavy cut pile fabrics such as W ilton carpets. In these looms it is desirable that the pile wires be inserted in the shed at such an angle that the entering end of the wire will be maintained in firm contact with the warp threads in the lower shed. This desirable angle of entrance is, however, subject to necessary variatiomdue in part to differences in the height of the pile and also in the weight of the fabric.

It is the general object of my invention to provide a construction in a pile fabric loom by which the angle of entrance of the pile wires may be conveniently changed and adjusted to meet particular conditions of operation.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which Fig. 1 is a front elevation of the pile-wire operating mechanism of a well known pile fabric loom;

Figs. 2 and 3 are enlarged detail plan views, looking in the direction of the arrows 2 and 3 in Fig. 1;

Fig. 4; is a detail side elevation of the parts shown in Fig. 3; and

Figs. 5 and 6 are detail sectional end elevations, taken along the lines 55 and 6-6 in Fig. 1.

Referring particularly to Fig. 1, I have shown portions of a pile wire actuating mechanism which is in general of a well known commercial type. The mechanism is supported upon a frame or extension 10 secured to a loom side 11 and projecting laterally from the loom for somewhat more than the full length of a pile wire. A. wire carriage 12 is mounted to slide on a guide bar 13 and is moved to the left to insert a wire by a rope or cable la extending from the carriage 12 around guide rolls 15 and 16 to a winding scroll 17. The scroll 1'? is rotatable upon a fixed bearing 18 and is commonly yieldingly actuated by a spring or weight to wind up the rope 1 1, thus moving the carriage 12 to the left.

A chain 20 is also provided for positively moving the carriage 12 to the right, withdrawing the pile wire and at the same time cutting the pile. The upper run of the chain 20 is supported in a chain trough 21 (Figs. 4 and 6) and is conducted fromxthe opposite ends of the trough 21 around guide pulleys 22, 23 and 2 1 to a sprocket wheel 25 which may be rotated by any convenient driving mechanism. I The parts thus far described are of the usual construction and in themselves form no part of my present invention.

The guide bar 13 for the carriage 12 is pivoted at 26 to a bracket 27 fixed to the 100m frame, the end of the guide bar being secured for this purpose in a guide bar head 28 a).

At its opposite end,'the bar 13 is ad justably secured to the supporting frame 10 by bolts 29 extending through slots 30 in the frame 10. For the purposes of such adjustment, the end of the bar 13 is provided with a casting 31, on which the end of a chain trough 21 is also supported as shown in Fig. 6. By loosening the bolts 29, the angle which the guide bar makes with the horizontal may be varied from the position shown in full lines in Fig. 1 to that shown in dotted lines in said figure.

The trough 21 is provided with a slotted bracket 32 (Fig. 4') at its left hand end which may be adjustably secured by a bolt 33 in proper spaced relation to the carriage guide bar 13. A second trough 34; is provided for guiding the pile wires VJ and is supported for both lateral and longitudinal sliding movement at its left hand end by a fixed arm or bracket 35. The trough 3 1 is provided at its opposite end with a head 36 (Fig. 6) mounted upon a vertical pivot stud 37 fixed in the casting 31 form ing the end of the guide bar 13. The right hand end of the wire trough 3 as well as the right hand end of the chain trough 21 may thus be adjusted vertically and simultaneously with the carriage guide bar 13.

As the chain 20 moves continuously in one direction, it is necessary to provide a detachable connection between the chain and the carriage and for this purpose a projecting tooth or lug (Fig. 4) on the chain '20 engages a latch 41 on. the carriage 12 When the latter is at its left hand limit of travel. As the carriage approaches the right hand end of the guide bar 13, a fixed cam plate 42 raises the latch 41 and thus disengages the carriage from the chain 20. i

The pile Wires W are placed successively in the Wire trough 3dand each Wireis held in vertical position against one side of the trough by a spring pressed plate, 4% 5). l/Vhile thus slidably supported, the Wire is pushed lengthwise along and from the Wire trough 341 by the carriage 12 and is thus inserted in the open shed ot the fabric. On its return movement, the carriage withdraws a pile Wire Which has been previously inserted in the Warp and which has served as a support for pile loops formed by the pattern-controlled pile Warp threads,

As previously stated, it is desirable that the pile Wires be inserted in the warp by a slight downward inclination, the ang r in the horizontal. bein made as large as is permissilole. It is found that the ligntflexible Wires usedior a short pile may be inserted at a considerable angle While the Wider and stifi'er Wires used for a long pile must be inserted more nearly horizontal.

YVith my improved construction the loom may be readily adapted for effectively inserting pile Wires in fabrics having Widely different characteristics and the required changes may be made With avery slight expenditure of time and labor.

Having thus described my invention and the advantages thereof I do not Wish to he limited to the details herein disclosed other- Wise than as set forth in the claims, but What I claim is 1. In a pile fabric loom, a plurality of cross pile Wires a Wire carriage, a guide bar on which said carriage is slidably mounted, and means to move said carriage one end of said bar being pivot-ally supported adjacent the loom side and the other end or said bar being vertically adjustable to vary the angle oi insertion of the pile Wires.

2. In a pile fabric loom, a plurality of cross pile Wires, a Wire carriage, a guide bar for said carriage, a chain to move said carriage, a supportfor said chain v pile Wire support, and means to simultaneously adjust the outer ends of said bar, chain support and Wire support to vary the angle of insertion oi? the pile Wires.

3. In a pile fabric loom, a plurality of cross pile Wires, a wire carriage a uide bar for said carriage a chain to move said carriage, a support for said chain, a pile \vire support, a head to which the outer ends of said guide bar, said chain support and said wire suppoiiv are secured in definite spaced relation, and means permitting vertical adjustment of said head and angular adjust-- ment of said bar and said supports While preserving the determined relation oi said bar and supports. 7

In testimony whereof I have hereunto atfixed my signature. I

EPPA H. LYON. 

